Home / 11,450.40-15,766.56-8,621.88

Finding the Fourth Proportional to 11,450.40, 15,766.56 and 8,621.88

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Solution

The fourth proportional to 11,450.40, 15,766.56 and 8,621.88 is: 11,871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,450.40 : 15,766.56 = 8,621.88 : x
  2. Step 2: Convert to fraction form
    11,450.40/15,766.56 = 8,621.88/x
  3. Step 3: Cross multiply
    11,450.40x = 15,766.56 × 8,621.88
  4. Step 4: Simplify right side
    11,450.40x = 135,937,388.33
  5. Step 5: Solve for x
    x = 135,937,388.33/11,450.40
  6. Step 6: Final answer
    x = 11,871.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.